THC is not water soluble, the tea is extremely worth making, you just have to make it correctly! We used to make this shit all the fucking time!
Take your stems (save up a few g's):
Get a cup of milk (preferably whole milk)
* Throw in a small amount of hard alcohol, dont have any? Use a little bit on vanilla extract* (Optional)
Take a tea bag, put in your stems (some people break em up.. whatever, do what you will)
I like tea, so I take a tea bag full of stems, and a tea bag full of tea.
Heat the cup of milk (potentially alcohol also), just under boiling (for some reason it foams like a motherfucker, so watch out for that)
Throw in your tea bags, let it steep until you can see a layer of what looks like a really thin skin on top of the milk (if you added tea the milk should look almost like coffee with a few things of creamer.)
Enjoy, it tastes good, it's good for you, and granted it does take a while to kick in, assuming you use enough stems, it will have a good high.. it's different from smoking, but it is rather pleasant.